User Melab

46 votes

3 answers

40k views

Is Triple DES still considered safe to use?

asked Sep 19, 2017 at 13:36

13 votes

1 answer

15k views

What is a universal hash function?

asked Nov 9, 2017 at 2:45

9 votes

2 answers

10k views

Explanation of each of the parameters used in ECC

asked Feb 13, 2015 at 3:05

1 vote

1 answer

7k views

What is the difference between a hash function and a pseudorandom function? [duplicate]

asked Feb 3, 2015 at 0:53

9 votes

2 answers

6k views

What is this "finite field cryptography"?

asked Apr 3, 2016 at 18:47

1 vote

1 answer

5k views

Calculating the multiplicative inverse of a number in $GF(2^n)$ where $n > 8$

asked Oct 17, 2017 at 14:02

-2 votes

1 answer

5k views

Speed of a 16384-bit RSA key

asked Mar 31, 2016 at 1:04

5 votes

2 answers

3k views

If the output size of SHAKE128/256 is variable, why is the security fixed at 128/256?

asked Feb 9, 2017 at 0:10

6 votes

1 answer

3k views

How does Boneh–Lynn–Shacham work?

asked Mar 4, 2016 at 18:57

7 votes

3 answers

3k views

Why don't table lookups run in constant time?

asked Nov 29, 2017 at 17:00

7 votes

1 answer

2k views

What is the security strength of an n-bit HMAC?

asked Apr 11, 2016 at 15:04

2 votes

1 answer

2k views

Why is ECBC-MAC with one key insecure?

asked Mar 18, 2018 at 17:48

1 vote

3 answers

2k views

Simple multiplication as an encryption method

asked Feb 8, 2015 at 5:41

4 votes

2 answers

2k views

How secure is the E0 stream cipher used in Bluetooth?

asked Jan 17, 2018 at 6:18

6 votes

3 answers

2k views

Inserting a backdoor into a cryptographic hash function

asked Apr 15, 2015 at 2:04

3 votes

1 answer

2k views

Is only one shared secret generated by ECDH per key pair?

asked Mar 30, 2015 at 20:20

10 votes

1 answer

2k views

What is an extendable output function?

asked Dec 26, 2017 at 19:23

7 votes

3 answers

2k views

Weaknesses in ARX block ciphers

asked Sep 8, 2017 at 15:00

0 votes

1 answer

2k views

Why use CCM instead CBC-then-MAC?

asked Jan 8, 2018 at 14:13

1 vote

2 answers

2k views

Merkle signature scheme

asked Mar 6, 2016 at 20:06

0 votes

2 answers

1k views

How fast would a polynomial time factoring algorithm compute?

asked Feb 4, 2015 at 15:59

2 votes

3 answers

1k views

Does this implementation of a function operate in constant time?

asked Jan 18, 2018 at 22:37

1 vote

2 answers

1k views

Authentication of data using XOR and a secure function

asked Sep 15, 2017 at 21:10

2 votes

1 answer

1k views

Explain the fast Walsh–Hadamard transform in simple steps or pseudocode

asked Dec 22, 2017 at 3:37

4 votes

1 answer

1k views

Can (EC)DH keys be used as the signed content in X.509 certificates?

asked Mar 28, 2016 at 4:38

6 votes

2 answers

1k views

Could an HMAC be used as a hash?

asked Jan 5, 2016 at 2:06

7 votes

2 answers

1k views

Post-quantum candidates for asymmetric cryptography with small key sizes

asked Dec 26, 2017 at 19:13

3 votes

2 answers

1k views

Combining a keystream generator with a block cipher

asked Jan 13, 2015 at 17:08

2 votes

1 answer

1k views

Are there any successful preimage attacks?

asked Jan 20, 2016 at 22:20

4 votes

2 answers

1k views

When does a feedback shift register count as non-linear?

asked Oct 16, 2017 at 0:08

Stack Exchange Network

119 Questions

Is Triple DES still considered safe to use?

What is a universal hash function?

Explanation of each of the parameters used in ECC

What is the difference between a hash function and a pseudorandom function? [duplicate]

What is this "finite field cryptography"?

Calculating the multiplicative inverse of a number in $GF(2^n)$ where $n > 8$

Speed of a 16384-bit RSA key

If the output size of SHAKE128/256 is variable, why is the security fixed at 128/256?

How does Boneh–Lynn–Shacham work?

Why don't table lookups run in constant time?

What is the security strength of an n-bit HMAC?

Why is ECBC-MAC with one key insecure?

Simple multiplication as an encryption method

How secure is the E0 stream cipher used in Bluetooth?

Inserting a backdoor into a cryptographic hash function

Is only one shared secret generated by ECDH per key pair?

What is an extendable output function?

Weaknesses in ARX block ciphers

Why use CCM instead CBC-then-MAC?

Merkle signature scheme

How fast would a polynomial time factoring algorithm compute?

Does this implementation of a function operate in constant time?

Authentication of data using XOR and a secure function

Explain the fast Walsh–Hadamard transform in simple steps or pseudocode

Can (EC)DH keys be used as the signed content in X.509 certificates?

Could an HMAC be used as a hash?

Post-quantum candidates for asymmetric cryptography with small key sizes

Combining a keystream generator with a block cipher

Are there any successful preimage attacks?

When does a feedback shift register count as non-linear?